Create non-animated, realistic film noise w/ scratches procedurally
You could do something like this.

The graph is comprised of mainly 2 parts - the &quot;spots&quot; and the &quot;lines&quot;. Similar to what you were thinking, instead of Noise Textures, I used the distance output of Voronai Textures to make the &quot;grain dots&quot;. I used varying levels of scale and randomness in addition to clamping the values with ColorRamps and using them to add a slight mustard-like hue (to match your image). I made 2 &quot;fields&quot; - one slightly dimmer than the other, and combined them using a Noise texture as a mix factor, so the end result would be a &quot;patchy&quot; combination of the two.

For the lines, I used a series of Wave Textures, offsetting some with Mapping Nodes and subtracting their values from each other, until I was left with some randomly spaced white lines that I then further darkened with another Noise Texture (so they aren't so evenly bright).

The last step, I used a Noise texture, heavily clamped to make the small white dots that are lightly &quot;speckled&quot;  around the image.

Finally I put them all together. I used an Emission Shader, as it makes sense that this is being emitted from a screen, and I ran the output through a HSV node first for finer control over the color and the brightness.

I'll post the file here, so you don't have to take the time to rebuild the graph yourself if you want to play with it.
File is here -